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Research on application of flowforms in combination with planted constructed wetland for improving water quality of urban polluted lakes

  • Thi Thuy Ha UngEmail author
  • Tuan Hung Pham
  • Tho Bach Leu
  • Thi Hien Hoa Tran
  • Hong Nhung Chu
Conference paper
  • 25 Downloads
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 54)

Abstract

With continuously increasing urbanization in Vietnam, urban lakes pollution by domestic wastewater has become a serious issue, which results in degradation of lake water quality and consequent deterioration of landscape as well as environment for urban residents. Finding low-cost, simple and sustainable solutions would help to overcome that issue in Vietnam’s context. This study aims at proposing a solution which includes low-cost, nature- and landscape-friendly processes such as wetlands and flowforms for improving polluted urban lakes. The study was carried-out on a pilot system consisting of a cascade of flowforms and a planted constructed wetland with flow recirculation. Water samples used in this study have been collected from an urban lake in Hanoi, which receives wastewater from a densely populated residential area. The research results have demonstrated that this solution could achieve high treatment efficiencies: Color - 92%, Chemical oxygen demand (COD) - 92%, Ammonia (NH4+-N) - 98% and Total Phosphorus (TP) - 87%. The effluent quality could meet requirement by Vietnam’s National technical regulation on surface water quality QCVN 08-MT:2015/BTNMT, level B1 in terms of the above mentioned parameters.

Keywords

Urban lake pollution water landscape flowform wetland low-cost 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Thi Thuy Ha Ung
    • 1
    Email author
  • Tuan Hung Pham
    • 1
  • Tho Bach Leu
    • 1
  • Thi Hien Hoa Tran
    • 1
  • Hong Nhung Chu
    • 1
  1. 1.National University of Civil EngineeringHanoiVietnam

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